Polymer lithium battery and classification analysis

The positive and negative materials used in polymer lithium batteries are the same as liquid lithium, and the working principle of the battery is basically the same. Their important difference lies in the difference in electrolytes. Lithium batteries use liquid electrolytes, while polymer lithium batteries are replaced by solid polymer electrolytes. This polymer can be dry or colloidal. Part of the polymer lithium battery using polymer gel electrolyte can be divided into three categories: 1. Solid polymer electrolyte lithium battery. The electrolyte is a mixture of polymer and salt. This battery has low ionic conductivity at room temperature and is suitable for high temperature use. 2. Gel polymer electrolyte lithium battery. That is, additives such as plasticizers are added to the solid polymer electrolyte to increase the ionic conductivity and enable the battery to be used at room temperature. 3. Lithium battery with polymer cathode material. Using conductive polymer as the positive electrode material, its energy is three times that of existing lithium batteries, which is the latest generation of lithium batteries. Since solid electrolytes are used instead of liquid electrolytes, compared with liquid lithium batteries, polymer lithium batteries have the advantages of being thinner, arbitrarily shaped and arbitrarily shaped, and will not have safety problems such as liquid leakage, combustion and explosion. Therefore, the battery casing can be made of aluminum-plastic composite film, which can increase the capacity of the entire battery; polymer lithium batteries can also use polymers as cathode materials, and their mass specific energy will be more than 50% higher than that of current liquid lithium batteries. In addition, polymer lithium batteries are better than lithium batteries in terms of operating voltage and charge-discharge cycle life. Disclaimer: Some pictures and content of articles published on this site are from the Internet, please contact to delete if there is any infringement. Previous: Briefly describe the important performance indicators of lithium batteries